<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="../../../resource/dhtmlxsuitev508proeval/codebase/dhtmlx.js"></script>
    <link rel="stylesheet" href="../../../resource/dhtmlxsuitev508proeval/codebase/dhtmlx.css">
    <link rel="stylesheet" href="../../../resource/dhtmlxsuitev508proeval/skins/skyblue/dhtmlx.css">
    <script src="../../../js/jquery-3.4.1.js"></script>
    <style>

        * {
            margin: 0;
            padding: 0;
        }

        html, body {
            width: 100%;
            height: 100%;
        }

    </style>
</head>
<body>
<div id="myForm"></div>
</body>
<script type="text/javascript">

    var myForm;

    var formData = [
        {type:"settings",position:"label-top"},
        {type: "fieldset",name:"calculator", label: "Calculator", list:[
                {type: "input", name: 'firstNum', label: 'First number:'},
                {type:"input", name:"secNum", label:"Second number:"},
                {type:"input", name:"resNum", label:"Result:"},
                {type:"newcolumn"},
                {type:"button", name:"plus", width:20,offsetTop:2, value:"+"},
                {type:"button", name:"minus",width:20,offsetTop:10, value:"-"},
                {type:"button", name:"multiply",width:20,offsetTop:10, value:"*"},
                {type:"button", name:"divide",width:20,offsetTop:10, value:"/"}
            ]
        }
    ];
    myForm = new dhtmlXForm("myForm", formData);

</script>
</html>